CN110017897A - A kind of compact monocular multichannel combined multi-optical spectrum imaging system - Google Patents
A kind of compact monocular multichannel combined multi-optical spectrum imaging system Download PDFInfo
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- CN110017897A CN110017897A CN201910312642.8A CN201910312642A CN110017897A CN 110017897 A CN110017897 A CN 110017897A CN 201910312642 A CN201910312642 A CN 201910312642A CN 110017897 A CN110017897 A CN 110017897A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
- G01J2003/2826—Multispectral imaging, e.g. filter imaging
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Abstract
The invention discloses a kind of compact monocular multichannel combined multi-optical spectrum imaging systems, comprising: optical lens interface, for fixing optical imaging lens；Light beam Amici prism is synthesized, is made of three or more prism cementings；Optical filter interface has three or more interfaces, is respectively used to fix the optical filter module of different spectral bands, to generate the spectral information of different spectral bands；Sensor, including three groups or multiple groups low spatial high spectral resolution sensor and the low spectral resolution sensor of high spatial form electric signal for the spectral information to be carried out photoelectric conversion；Image collection processing system, comprising: image processing module, optical filter identification module, memory, information superposition module and parsing module.
Description
Technical field
The invention belongs to multispectral imaging remote sensing technology fields, more particularly to a kind of compact monocular Multi-pass multi-spectrum
Imaging system can be used for carrying out airborne, vehicle-mounted or portable alternative and obtain to target progress multispectral survey imaging and the acquisition of information
It takes.
Background technique
Since multispectral image contains the various features of characterization target scene information, commented in remote sensing, medical treatment, natural calamity
Estimate, military surveillance, the various fields such as agricultural forest are all widely used, the spectral information in multiple channels not only meets one
As purposes, comparison EO-1 hyperion camera have a small amount of data, " real-time ", Er Qiexing are more easily implemented in the processing in later period
Valence ratio is higher, therefore multispectral camera is all widely used always, and how fast, accurately to acquire high-resolution mostly light
Spectrogram picture is also important always research hotspot.
That has applied while conventional at present is mainly the following type:
1, monocular single channel polyphaser combination, this mode are that each camera uses an optical filter, while using one
A imaging lens, polyphaser are placed using parallel mode, so that target scene is carried out while is imaged, this mode it is excellent
Point the problem of being multiple spectrum channels while being imaged, high resolution, bringing, is exactly that volume is big, while the collimation of multiple cameras
It adjusts also very complicated in batch production.
2, using the monocular multichannel camera of rotation (straight line) optical filter, this mode be using a camera and one at
As camera lens, between camera lens and camera by the way of rotating filtering piece or straight line optical filter, the side of different-waveband imaging is realized
The advantages of formula, this mode be do not sacrifice resolution ratio and it is small in size in the case where, realize multichannel spectral information acquisition,
But since the optical filter for switching different channels requires certain delay, the real-time of acquisition is reduced, is unfavorable in machine
The use of carrying platform or Quick Acquisition occasion.
3, more mesh multichannel one cameras, this mode are to carry out area on the sensor target surface of camera using a camera
Regional partition, each region correspond to different spectral bands, and a camera lens and corresponding optical filter are placed in corresponding position, this
The advantages of mode is under the conditions of volume increases limited, and multiple channel spectrum information acquire real time imagery simultaneously, are conducive to small
Type unmanned plane carry remote sensing observations, the disadvantage is that the image resolution ratio in each channel is lower, corresponding spatial resolution is also very low, only
It is suitble to low-latitude flying or the very big observation occasion of target signature to use.
Summary of the invention
The shortcomings that present invention aim to address above-mentioned three types equipment, while its advantage is integrated, guaranteeing
Under conditions of small in size, high-definition picture real time imagery is realized, while can also be compatible with the structure of optical filter, to meet low and middle-end
The use in field.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of compact monocular multichannel combined multi-optical spectrum imaging system, comprising:
Optical lens interface, for fixing optical imaging lens；
Amici prism is made of three or more prism cementings；
Optical filter interface has three or more interfaces, is respectively used to fix the optical filter module of different spectral bands, to generate
The spectral information of different spectral bands；
Sensor, including three groups or multiple groups low spatial high spectral resolution sensor and the low spectral resolution sensor of high spatial,
Electric signal is formed for the spectral information to be carried out photoelectric conversion；
Image collection processing system, comprising: image processing module, optical filter identification module, memory, information superposition module and solution
Analyse module；
The information superposition module, using spatial spectral converter technique, by the spectral information of low spatial high spectral resolution sensor
It is matched and is merged by band class with the spectral information from the low spectral resolution sensor of high spatial, generate picture number
According to；
The optical filter identification module obtains the information of the optical filter module of the different spectral bands；
Described image processing module, the information that will acquire is respectively with port number, central wavelength, bandwidth, peak transmittance, cut-off model
Enclose, end every a line that depth and spectrum correction coefficient are superimposed to described image data, and by the data of every a line with do not share the same light
The information for composing the optical filter module of wave band carries out convolution, saves to each column of image data, is deposited using the memory
Storage, is parsed with being supplied to the parsing module.
Preferably, the information superposition module uses subregion marginalisation stacking method, melts to described image data
It closes, retains the more spectral informations of fused image data.
Preferably, geometrical registration and frequency correction are carried out to the fused image data, obtains different zones edge
The textural characteristics of image, and by the textural characteristics from the spectral signature of different spectral bands is corresponding does difference operation, obtain line
Reason is superimposed to the fused image data with after spectral differences image.
Preferably, the textural characteristics include multiplier value, the uniformity, contrast, entropy, gray scale and variance.
Preferably, described image processing module can carry out linear transformation to described image data, realize image enhancement.
Preferably, the incident light spectrum information received is carried out equal part by three or more described prisms, respectively from described three
It projects the outgoing end face of a or multiple prisms.
Detailed description of the invention
Fig. 1 is Amici prism structural schematic diagram；
Fig. 2 is optical filter module structural schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment of the present invention discloses a kind of compact monocular multichannel combined multi-optical spectrum imaging system, comprising:
Optical lens interface 1, for fixing optical imaging lens；
Amici prism 2 is made of prism A, prism B, prism C gluing, and wherein F1 and F2 is respectively its cemented surface, thus by three
Prism arrangement receives the spectral information a that is transmitted by optical lens together, in light beam incident end face, then will receive
The progress of incident light spectrum information is third to be divided into b, c, d；
Optical filter interface, there are three tools, is respectively used to fix optical filter module 3a, 3b, 3c of three different spectral bands, to produce
The spectral information of raw different spectral bands；
Sensor, including three groups of low spatial high spectral resolution sensors and the low spectral resolution sensor 4a, 4b of high spatial,
4c forms electric signal for the spectral information to be carried out photoelectric conversion；
Image collection processing system 5, comprising: image processing module, optical filter identification module, memory, information superposition module and
Parsing module；
The information superposition module, using spatial spectral converter technique, by the spectral information of low spatial high spectral resolution sensor
It is matched and is merged by band class with the spectral information from the low spectral resolution sensor of high spatial, generate picture number
According to；
The optical filter identification module obtains the information of the optical filter module of the different spectral bands；
Described image processing module, the information that will acquire is respectively with port number, central wavelength, bandwidth, peak transmittance, cut-off model
Enclose, end every a line that depth and spectrum correction coefficient are superimposed to described image data, and by the data of every a line with do not share the same light
The information for composing the optical filter module of wave band carries out convolution, saves to each column of image data, is deposited using the memory
Storage, is parsed with being supplied to the parsing module.
In an alternative embodiment, the information superposition module uses subregion marginalisation stacking method, to described
Image data is merged, and the more spectral informations of fused image data are retained.
In an alternative embodiment, geometrical registration and frequency correction are carried out to the fused image data, obtained
Take the textural characteristics of different zones edge image, and by the textural characteristics from the spectral signature of different spectral bands is corresponding makes the difference
It is worth operation, after obtaining texture and spectral differences image, is superimposed to the fused image data.
In an alternative embodiment, the textural characteristics include multiplier value, the uniformity, contrast, entropy, gray scale and
Variance etc..
In an alternative embodiment, described image processing module can carry out linear transformation to described image data,
Realize image enhancement.
The present invention, which compares prior art, has following innovative point:
Monocular multi-channel spectral imaging system is realized using prismatic decomposition+optical filtering sheet mode 1. being put forward for the first time；
The type that electrical interface knowledge carries out judging automatically otherwise optical filter is carried out with optical filter module 2. first proposed；
3. the advantages of high-resolution with monocular single channel polyphaser combination, multichannel real time imagery；
4. having more mesh multichannel one cameras advantage small in size；
5. being compatible with the advantage of low cost of rotation or straight line optical filter monocular multichannel camera.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel only illustrate the present invention it should be appreciated that the present invention is not limited by examples detailed above described in examples detailed above and specification
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its is equal
Object defines.
Claims (6)
1. a kind of compact monocular multichannel combined multi-optical spectrum imaging system characterized by comprising
Optical lens interface, for fixing optical imaging lens；
Amici prism is made of three or more prism cementings；
Optical filter interface has three or more interfaces, is respectively used to fix the optical filter module of different spectral bands, to generate
The spectral information of different spectral bands；
Sensor, including three groups or multiple groups low spatial high spectral resolution sensor and the low spectral resolution sensor of high spatial,
Electric signal is formed for the spectral information to be carried out photoelectric conversion；
Image collection processing system, comprising: image processing module, optical filter identification module, memory, information superposition module and solution
Analyse module；
The information superposition module, using spatial spectral converter technique, by the spectral information of low spatial high spectral resolution sensor
It is matched and is merged by band class with the spectral information from the low spectral resolution sensor of high spatial, generate picture number
According to；
The optical filter identification module obtains the information of the optical filter module of the different spectral bands；
Described image processing module, the information that will acquire is respectively with port number, central wavelength, bandwidth, peak transmittance, cut-off model
Enclose, cut-off depth and spectrum correction coefficient etc. are superimposed to every a line of described image data, and by the data of every a line from it is different
The information of the optical filter module of spectral band carries out convolution, saves to each column of image data, is carried out using the memory
Storage, is parsed with being supplied to the parsing module.
2. compact monocular multichannel combined multi-optical spectrum imaging system according to claim 1, which is characterized in that institute
Information superposition module is stated using subregion marginalisation stacking method, described image data are merged, fused figure is retained
As the more spectral informations of data.
3. compact monocular multichannel combined multi-optical spectrum imaging system according to claim 2, which is characterized in that right
The fused image data carries out geometrical registration and frequency correction, obtains the textural characteristics of different zones edge image, and
By the textural characteristics from the spectral signature of different spectral bands is corresponding does difference operation, obtain texture and spectral differences image
Afterwards, it is superimposed to the fused image data.
4. compact monocular multichannel combined multi-optical spectrum imaging system according to claim 3, which is characterized in that institute
Stating textural characteristics includes multiplier value, the uniformity, contrast, entropy, gray scale and variance etc..
5. compact monocular multichannel combined multi-optical spectrum imaging system according to claim 1, which is characterized in that institute
Linear transformation can be carried out to described image data by stating image processing module, realize image enhancement.
6. compact monocular multichannel combined multi-optical spectrum imaging system according to claim 1, which is characterized in that institute
It states three or more prisms and the incident light spectrum information received is subjected to equal part, respectively from the outgoing of three or more prisms
It projects end face.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110751036A (en) * | 2019-09-17 | 2020-02-04 | 宁波大学 | High spectrum/multi-spectrum image fast fusion method based on sub-band and blocking strategy |
| CN111426640A (en) * | 2020-05-18 | 2020-07-17 | 中国工程物理研究院流体物理研究所 | Switchable continuous working spectrum camera and detection method |
| CN112560841A (en) * | 2020-12-07 | 2021-03-26 | 上海新产业光电技术有限公司 | Array camera |
| WO2021083163A1 (en) * | 2019-10-30 | 2021-05-06 | 南京大学 | High-speed and high-precision spectral video system for photographing flames, and method |
| CN114062281A (en) * | 2021-11-19 | 2022-02-18 | 南京农业大学 | Wide-view-angle multispectral imaging crop growth sensing device |
| CN114079754A (en) * | 2020-08-19 | 2022-02-22 | 华为技术有限公司 | Image sensor, signal processing method and equipment |
| CN114693756A (en) * | 2022-06-01 | 2022-07-01 | 中国工程物理研究院流体物理研究所 | Real-time image processing device and method suitable for airborne spectral imaging system |
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| CN110751036A (en) * | 2019-09-17 | 2020-02-04 | 宁波大学 | High spectrum/multi-spectrum image fast fusion method based on sub-band and blocking strategy |
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| CN114062281A (en) * | 2021-11-19 | 2022-02-18 | 南京农业大学 | Wide-view-angle multispectral imaging crop growth sensing device |
| CN114062281B (en) * | 2021-11-19 | 2023-12-01 | 南京农业大学 | Wide-view-angle multispectral imaging type crop growth sensing device |
| CN114693756A (en) * | 2022-06-01 | 2022-07-01 | 中国工程物理研究院流体物理研究所 | Real-time image processing device and method suitable for airborne spectral imaging system |
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